simple_shell

simple_shell is a basic UNIX-style command-line interpreter written in C. It replicates some of the core functionalities of the standard Unix shell, including executing built-in and external commands, input/output redirection, and piping.

Features

• Execute built-in commands (exit, env)
• Execute external commands in the system’s $PATH
• Support for input (<) and output (>) redirection
• Simple piping (|) between commands
• Works in both interactive and non-interactive modes

Prerequisites

• GCC (GNU Compiler Collection)
• A UNIX-like operating system (Linux, macOS, etc.)

Installation

1. Clone the repository:

   git clone https://github.com/sanzamcmillian/simple_shell.git
   

2. Navigate into the project directory:

   cd simple_shell
   

3. Compile the shell:

   gcc -Wall -Werror -Wextra -pedantic *.c -o hsh
   
   

Usage

• To start the shell, run:

  ./hsh
  

• Then you can start typing commands, for example:

  $ ls -la
  $ echo "Hello, World!"
  $ cat input.txt > output.txt
  $ grep "word" file.txt | sort
  

• To exit the shell, use:

  exit
  

Built-in Commands

• exit: Exit the shell
• env: Print environment variables

File Structure

• main.c: Entry point, main loop
• builtin.c: Built-in command implementations
• getline.c: Custome getline implementation
• init.c: initialization logic
• non_inter.c: Non-interactive mode handler
• util.c: Helper and utility functions
• shell.h: Header file with funtction declarations and macros

Author

Sanele Skhosana

License

This project is open-source and available under MIT License.